San Mateo, California, apparently got a head start on the Summer of Love, as it apparently was a hotbed for wild sexual behavior in 1966. Here’s an excerpt about that lasciviousness from a September 1, 1966 report in Jet magazine:
“In San Mateo, California, Dr. Harold D. Chope, county health and welfare director, revealed that wife-swapping orgies are causing a sharp increase in the venereal disease rate and one of the married women patients said she had as many as 200 different sex partners over a six-month period. At the same time there has been a sharp drop in the county’s birth rate. Dr Chope said the drop in birth rate was a ‘healthy thing,’ but termed the wife-swapping craze ‘a great worry.’ He said ‘young married couples gather together in large groups, peal off their clothes and start to drink. Before the weekend is over they’ve had relations with practically everyone at the session who is attractive to them.”